CHELSEA RACHAEL COSNER
NPI 1003393380
Psychiatry & Neurology - Child & Adolescent Psychiatry in Boston, MA
About Chelsea Rachael Cosner NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHELSEA RACHAEL COSNER (NPI 1003393380) is an individual child & adolescent psychiatry provider in Boston, Massachusetts, licensed in Massachusetts (1018908) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Chelsea Rachael Cosner is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Chelsea Cosner's NPI number?
The NPI number for Chelsea Cosner is 1003393380. It was assigned to this individual provider in the NPPES registry on July 19, 2018.
Where is Chelsea Cosner located?
Chelsea Cosner practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 724-5600.
What is Chelsea Cosner's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Chelsea Cosner enrolled in Medicare?
Yes. Chelsea Cosner is registered in the Medicare PECOS enrollment system.
What insurance does Chelsea Cosner accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Chelsea Cosner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Chelsea Cosner was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Chelsea Rachael Cosner · NPI 1003393380
Child & Adolescent Psychiatry physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 19, 2018.
## Identity
- **NPI:** 1003393380 (Entity type: Individual)
- **Enumerated:** July 19, 2018
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 1018908 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2621
- **Phone:** (617) 724-5600
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for durable medical equipment, power mobility devices
## Record status
- **NPPES last updated:** October 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003393380) · Data from the CMS NPPES public registry.